Article: How to purify water in an emergency.(includes related article on livestock water needs)

Water is the most crucial element for staying alive. It's more important than food.

Everyone must have enough safe drinking water, which generally means one gallon per person per day. Needs will differ according to age, physical condition, lifestyle and climate.

This doesn't include water for cooking, bathing, washing dishes and clothes, and pets or other animals. Large dogs may need as much as a gallon a day, while cats can do well with just a pint a day. If you have other livestock your water needs obviously soar. But in that case, water taken directly from a river or stream, without purification, will probably be okay.

Untreated water ...

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